Post-Outburst Accretion Resumption in RS Ophiuchi

H. L. Worters; Stewart Eyres; G. E. Bromage; J. P. Osborne

Post-Outburst Accretion Resumption in RS Ophiuchi

H. L. Worters, Stewart Eyres, G. E. Bromage, J. P. Osborne

Faculty of Computing, Engineering and Science

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

The latest outburst of the recurrent nova RS Oph occurred in 2006 February. Photometric data presented here show evidence of the resumption of optical flickering, indicating re-establishment of accretion by day 241 of the outburst. Magnitude variations of up to 0.32 mag in the V-band and 0.14 mag in B on time-scales of 600-7000 s are detected. Over the two week observational period we also detect a 0.5 mag decline in the mean brightness, from V ≈ 11.4 to V ≈ 11.9, and record B ≈ 12.9 mag. Limits on the mass accretion rate of ∼ 10−10 ≤ dM/dtacc ≤ 10−9M⊙yr−1 are calculated, which span the range of accretion rates modelled for direct wind accretion and Roche lobe overflow mechanisms. The current accretion rate presents difficulties in explaining the observed recurrence interval by thermonuclear runaway, implying low average accretion rates immediately post–outburst.

Original language	English
Title of host publication	RS Ophiuchi (2006) and the Recurrent Nova Phenomenon
Subtitle of host publication	Astronomical Society of the Pacific Conference Series
Editors	A. Evans, M. Bode, T. J. O'Brien, M. J. Darnley
Publisher	Astronomical Society of the Pacific
Pages	223
Volume	401
ISBN (Electronic)	978-1-58381-675-2
ISBN (Print)	978-1-58381-674-5
Publication status	Published - Dec 2008
Event	RS OPHIUCHI (2006) AND THE RECURRENT NOVA PHENOMENON: Proceedings of a workshop held at Keele University, 12-14 June 2007 - Keele University, Keele, United Kingdom Duration: 12 Jun 2007 → 14 Jun 2007

Workshop

Workshop	RS OPHIUCHI (2006) AND THE RECURRENT NOVA PHENOMENON
Country/Territory	United Kingdom
City	Keele
Period	12/06/07 → 14/06/07

Cite this

@inproceedings{451404b3024542e98ca076db096c5c1c,

title = "Post-Outburst Accretion Resumption in RS Ophiuchi",

abstract = "The latest outburst of the recurrent nova RS Oph occurred in 2006 February. Photometric data presented here show evidence of the resumption of optical flickering, indicating re-establishment of accretion by day 241 of the outburst. Magnitude variations of up to 0.32 mag in the V-band and 0.14 mag in B on time-scales of 600-7000 s are detected. Over the two week observational period we also detect a 0.5 mag decline in the mean brightness, from V ≈ 11.4 to V ≈ 11.9, and record B ≈ 12.9 mag. Limits on the mass accretion rate of ∼ 10−10 ≤ dM/dtacc ≤ 10−9M⊙yr−1 are calculated, which span the range of accretion rates modelled for direct wind accretion and Roche lobe overflow mechanisms. The current accretion rate presents difficulties in explaining the observed recurrence interval by thermonuclear runaway, implying low average accretion rates immediately post–outburst.",

author = "Worters, {H. L.} and Stewart Eyres and Bromage, {G. E.} and Osborne, {J. P.}",

year = "2008",

month = dec,

language = "English",

isbn = "978-1-58381-674-5",

volume = "401",

pages = "223",

editor = "A. Evans and M. Bode and O'Brien, {T. J.} and Darnley, {M. J. }",

booktitle = "RS Ophiuchi (2006) and the Recurrent Nova Phenomenon",

publisher = "Astronomical Society of the Pacific",

note = "RS OPHIUCHI (2006) AND THE RECURRENT NOVA PHENOMENON : Proceedings of a workshop held at Keele University, 12-14 June 2007 ; Conference date: 12-06-2007 Through 14-06-2007",

}

Worters, HL, Eyres, S, Bromage, GE & Osborne, JP 2008, Post-Outburst Accretion Resumption in RS Ophiuchi. in A Evans, M Bode, TJ O'Brien & MJ Darnley (eds), RS Ophiuchi (2006) and the Recurrent Nova Phenomenon: Astronomical Society of the Pacific Conference Series. vol. 401, Astronomical Society of the Pacific, pp. 223, RS OPHIUCHI (2006) AND THE RECURRENT NOVA PHENOMENON, Keele, United Kingdom, 12/06/07.

Post-Outburst Accretion Resumption in RS Ophiuchi. / Worters, H. L.; Eyres, Stewart; Bromage, G. E. et al.
RS Ophiuchi (2006) and the Recurrent Nova Phenomenon: Astronomical Society of the Pacific Conference Series. ed. / A. Evans; M. Bode; T. J. O'Brien; M. J. Darnley. Vol. 401 Astronomical Society of the Pacific, 2008. p. 223.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Post-Outburst Accretion Resumption in RS Ophiuchi

AU - Worters, H. L.

AU - Eyres, Stewart

AU - Bromage, G. E.

AU - Osborne, J. P.

PY - 2008/12

Y1 - 2008/12

N2 - The latest outburst of the recurrent nova RS Oph occurred in 2006 February. Photometric data presented here show evidence of the resumption of optical flickering, indicating re-establishment of accretion by day 241 of the outburst. Magnitude variations of up to 0.32 mag in the V-band and 0.14 mag in B on time-scales of 600-7000 s are detected. Over the two week observational period we also detect a 0.5 mag decline in the mean brightness, from V ≈ 11.4 to V ≈ 11.9, and record B ≈ 12.9 mag. Limits on the mass accretion rate of ∼ 10−10 ≤ dM/dtacc ≤ 10−9M⊙yr−1 are calculated, which span the range of accretion rates modelled for direct wind accretion and Roche lobe overflow mechanisms. The current accretion rate presents difficulties in explaining the observed recurrence interval by thermonuclear runaway, implying low average accretion rates immediately post–outburst.

AB - The latest outburst of the recurrent nova RS Oph occurred in 2006 February. Photometric data presented here show evidence of the resumption of optical flickering, indicating re-establishment of accretion by day 241 of the outburst. Magnitude variations of up to 0.32 mag in the V-band and 0.14 mag in B on time-scales of 600-7000 s are detected. Over the two week observational period we also detect a 0.5 mag decline in the mean brightness, from V ≈ 11.4 to V ≈ 11.9, and record B ≈ 12.9 mag. Limits on the mass accretion rate of ∼ 10−10 ≤ dM/dtacc ≤ 10−9M⊙yr−1 are calculated, which span the range of accretion rates modelled for direct wind accretion and Roche lobe overflow mechanisms. The current accretion rate presents difficulties in explaining the observed recurrence interval by thermonuclear runaway, implying low average accretion rates immediately post–outburst.

M3 - Conference contribution

SN - 978-1-58381-674-5

VL - 401

SP - 223

BT - RS Ophiuchi (2006) and the Recurrent Nova Phenomenon

A2 - Evans, A.

A2 - Bode, M.

A2 - O'Brien, T. J.

A2 - Darnley, M. J.

PB - Astronomical Society of the Pacific

T2 - RS OPHIUCHI (2006) AND THE RECURRENT NOVA PHENOMENON

Y2 - 12 June 2007 through 14 June 2007

ER -

Post-Outburst Accretion Resumption in RS Ophiuchi

Abstract

Workshop

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